Large scale temperature and humidity cycling laboratory

1Large scale temperature and humidity cycling laboratoryThe role in different industries

Its core function is to simulate the possible or long-term temperature and humidity conditions that products may encounter in natural environments by accurately controlling parameters such as temperature and humidity, and to verify changes in product performance. The specific roles of different industries are as follows:

1. Electronic and electrical industry

Test objects: electronic components (chips, resistors, capacitors), complete machines (computers, air conditioners, communication equipment), etc.

Function: To verify the performance stability (such as circuit conductivity, signal transmission efficiency), lifespan, and reliability of the product in high temperature and high humidity, low temperature and low humidity environments, and to avoid short circuits, aging, or functional failure caused by environmental changes.

For example, testing the startup performance of a mobile phone at -20 ℃ or the motherboard's corrosion resistance in a high humidity environment of 40 ℃ and 90% RH.

2. Automotive and parts industry

Test objects: automotive components (dashboard, wiring harness, sensors, tires), complete vehicles or semi assemblies.

Function: Simulate the environment of a car in different regions (such as tropical high temperature and humidity, cold zone low temperature) or driving scenarios (such as engine compartment high temperature), verify the aging and fatigue resistance of components, and ensure driving safety.

For example, testing the sealing performance of car seals under temperature cycling from -40 ℃ to 80 ℃, or the display stability of car displays under 60 ℃ and 85% RH environment.

3. Aerospace industry

Test objects: spacecraft components (satellite batteries, navigation systems), aviation materials (cabin interiors, high-temperature resistant coatings).

Function: Simulate high-altitude (low temperature, low pressure), ground storage and other environments, verify the product's tolerance in complex environments, and avoid malfunctions caused by environmental fluctuations during launch or operation.

For example, testing the power generation efficiency of satellite solar panels under rapid temperature changes from -100 ℃ to 120 ℃, or the mechanical properties of cabin materials under low humidity (10% RH).

4. Food and packaging industry

Test objects: packaged food (canned food, snacks), food packaging materials (plastic film, cardboard boxes).

Function: Simulate transportation or storage environments (such as high temperature and humidity in sea transportation, low temperature in cold chain), verify the shelf life of food, moisture resistance and sealing of packaging, and avoid spoilage or leakage.

For example, testing the taste changes of instant noodles in an environment of 38 ℃ and 85% RH for 3 months, or the crack resistance of beverage bottles at low temperatures of -10 ℃.

5. Materials and Textile Industry

Test objects: polymer materials (plastics, rubber), textiles (clothing, fabrics), coatings, etc.

Function: To test the physical properties (such as strength, elasticity, color fastness) of materials under changes in temperature and humidity, and evaluate their resistance to aging and weather.

For example, testing the impact resistance of outdoor plastic seats under -30 ℃ to 70 ℃ cycling, or the moisture permeability of down jacket fabrics under 90% RH high humidity.

6. Metrology and Calibration Industry

Test object: Precision instruments (thermometer, hygrometer, balance).

Function: To provide a stable temperature and humidity environment as a calibration benchmark, ensuring that the measurement accuracy of measuring instruments meets national standards (such as JJF 1101-2019 "Calibration Specification for Temperature and Humidity Parameters of Environmental Testing Equipment").

IILarge scale temperature and humidity cycling laboratoryCommon testing conditions

The testing conditions need to be customized according to industry standards (such as IEC, ISO, GB) or product requirements, with core parameters including:

1. Temperature range: Conventional: -70 ℃~150 ℃; Special requirements can be extended to -100 ℃~200 ℃ (such as in the aerospace industry).

2. Humidity range: Conventional: 20% RH~98% RH; Low humidity can reach below 10% RH, while high humidity can approach 100% RH (such as simulating condensation environments).

3. Control accuracy: Temperature: fluctuation ± 0.5 ℃, uniformity ± 2 ℃ (temperature difference at different points inside the cabin); Humidity: fluctuation ± 2% RH, uniformity ± 3% RH.

4. Testing time: ranging from a few hours (such as rapid screening tests) to several months or even years (such as lifespan aging tests).

5. Cycle mode: constant temperature and humidity (continuous testing with fixed temperature and humidity); Temperature cycling (such as alternating between -40 ℃ and 80 ℃); Humidity cycling (such as 20% RH90% RH gradient).

The above conditions need to be adjusted in conjunction with specific testing standards (such as GB/T 2423 for the electronics industry and ISO 16750 for the automotive industry) to ensure the scientific validity of the test results.

3、 Main features:

1. It has a wide temperature and humidity control range, which can meet various needs of users. By adopting the balanced temperature and humidity control method designed by Anderson, a safe and accurate temperature and humidity environment can be achieved. Having stable and balanced heating and humidification performance, it can achieve high-precision and highly stable temperature and humidity control.

2. Equipped with high-precision intelligent temperature regulators, temperature and humidity are displayed on a 7-inch touch screen. Can record temperature and humidity curves.

3. Automatic selection of refrigeration circuit, the automatic control device has the performance of automatically selecting and operating the refrigeration circuit according to the set value of temperature, achieving direct start of the refrigeration machine and direct cooling under high temperature conditions.

4. The door is equipped with a large observation window, which can facilitate the observation of the test status of the test sample.

5. Equipped with safety protection devices such as leakage circuit breakers, over temperature protectors, phase loss protectors, water cut-off protectors, etc.